Edge sealing device for inner floating disc

Abstract

The invention discloses an edge sealing device for an inner floating disc. The edge sealing device comprises a lower edge plate and an upper edge plate; an elastic sealing unit is arranged between the top of the upper edge plate and a tank wall; one end of the elastic sealing unit is fixedly connected with the top end of the upper edge plate, and the other end of the elastic sealing unit extends to be tightly attached to the inner side of the tank wall; a supporting unit is arranged on the upper edge plate; the supporting unit comprises a supporting plate, the lower end of the supporting plate is fixedly connected with the upper edge plate, an arc-shaped plate is arranged at the upper end of the supporting plate, and an outer arc surface of the arc-shaped plate upwards abuts against the elastic sealing unit; and outer side surfaces of the lower edge plate and the upper edge plate are coated with edge plate sealing layers. The elastic sealing unit has good natural elasticity to be tightly attached to the tank wall, so that the sealing effect of a tank wall side is good; and meanwhile, the outer side surfaces of the lower edge plate and the upper edge plate are coated with the edge plate sealing layers, and oil gas space of an inner floating disc side is completely isolated from the outside through the edge plate sealing layers, so that the sealing effect of the inner floating disc side is good.

Description

technical field [0001] The invention belongs to the technical field of floating roof tanks, and in particular relates to an inner floating plate edge sealing device. Background technique [0002] In terms of petrochemical storage technology, in order to reduce the volatilization of materials in the storage tank, floating roof storage tanks are generally used. The floating roof storage tank is equipped with an inner floating plate, and the inner floating plate floats on the liquid surface in the storage tank and follows the inside of the storage tank. The liquid level of the oil moves synchronously, and the annular space between the inner floating plate and the tank wall is sealed by a sealing device, thereby limiting the contact between the material and the atmosphere. [0003] At present, the sealing structures used between the inner floating plate and the tank wall mainly include: bladder seals, elastic pressure plate seals, scraper seals, and mechanical seals; the bladder...

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Problems solved by technology

[0003] At present, the sealing structures used between the inner floating plate and the tank wall mainly include: bladder seals, elastic pressure plate seals, scraper seals, and mechanical seals; the bladder seals cannot be tightly sealed when the tank is subjected to external forces. Fit the tank wall, resulting in oil and gas leakage. In addition, the capsule seal is easy to break. After the damage, the oil enters the inside of the seal, causing the seal to fail. The elastic pressure plate seal does not have a good sealing effect on the side of the inner floating plate, which may easily cause the inner floating plate Oil and gas leakage at the edge plate; the scraper type seal is that the scraper is closely attached to the tank wall, and the sealing effect is poor; the mechanical seal is that the pressure plate is closely attached to the tank wall, and the surface-to-surface contact is adopted, and the sealing effect is poor

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